CN102819234B - A kind of motor pre-boot ventilation control system - Google Patents
A kind of motor pre-boot ventilation control system Download PDFInfo
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- CN102819234B CN102819234B CN201210272997.7A CN201210272997A CN102819234B CN 102819234 B CN102819234 B CN 102819234B CN 201210272997 A CN201210272997 A CN 201210272997A CN 102819234 B CN102819234 B CN 102819234B
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- air
- control system
- gas outlet
- pressure transmitter
- transmitter
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- 238000009423 ventilation Methods 0.000 title claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 230000010354 integration Effects 0.000 claims description 3
- 239000002360 explosive Substances 0.000 abstract description 8
- 238000010926 purge Methods 0.000 abstract description 7
- 238000004880 explosion Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 231100001261 hazardous Toxicity 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005422 blasting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Control Of Fluid Pressure (AREA)
Abstract
A kind of motor pre-boot ventilation control system of the present invention, this system is by air mass flow transmitter, motor cavity pressure transmitter, pipeline pressure transmitter, control system main frame, air pipe line solenoid valve, air vacuum filter, Systematical control casing, both air flow modulation ball valve and gas outlet composition, both air flow modulation ball valve and gas outlet are installed on the relative sidewall of two of Systematical control casing respectively, air vacuum filter is connected with in turn between both air flow modulation ball valve and gas outlet, air pipe line solenoid valve, pipeline pressure transmitter and air mass flow transmitter.This ventilated control system by being forced to flow through motor cavity by a large amount of pure airs before electric motor starting, the explosive gas mixture that may exist in motor is taken out of or its concentration is reduced to below explosion limits, reach after purging requirement and provide electric motor starting signal again, the effective generation stoping blast.
Description
Technical field
The present invention relates to the integration control technology field under explosive gas mixture environment, particularly a kind of motor pre-boot ventilation control system.
Background technology
In prior art, pneumatic purging system mostly is the control mode taking timer formula, not a kind ofly be specifically designed in the hazardous area with explosive gas mixture, such as, containing II A, II B and II C level, and T1 ~ T5 group damp or steam and air be mixed to form 1st district, purging (ventilation) control system that uses in 2 district's explosive gas mixture environment.Along with the fast development of petroleum chemical industry, increasing electricity companion has been had to use region to belong to the aforesaid hazardous area with explosive gas mixture, if by being taken out of by the explosive gas mixture that may exist in motor or its concentration being reduced to below explosion limits before electric motor starting, the danger of blasting can not will be had.Therefore, provide a kind of ventilated control system being specifically designed to this type of Code in Hazardous Special Locations with tight security to become in prior art to be badly in need of the technical matters solved.
Summary of the invention
In view of the foregoing defects the prior art has, the invention provides cavity ventilation (purging) automatic control system before the startup of a kind of fire proof motor, this system by AVR series high-performance single-chip microcomputer as master chip, coordinate high-precision pressure and flow sensor, automatically can run according to preset program, before electric motor starting, a large amount of pure airs is forced to flow through motor cavity, the explosive gas mixture that may exist in motor is taken out of or its concentration is reduced to below explosion limits, reach after purging requirement and provide electric motor starting signal again, the effective generation stoping blast.
For reaching above-mentioned purpose, the present invention takes following scheme:
A kind of motor pre-boot ventilation control system, this system is made up of air mass flow transmitter, motor cavity pressure transmitter, pipeline pressure transmitter, control system main frame, air pipe line solenoid valve, air vacuum filter, Systematical control casing, both air flow modulation ball valve and gas outlet.Both air flow modulation ball valve and gas outlet are installed on the relative sidewall of two of Systematical control casing respectively, are connected with air vacuum filter, air pipe line solenoid valve, pipeline pressure transmitter and air mass flow transmitter between both air flow modulation ball valve and gas outlet in turn;
In Systematical control casing, between both air flow modulation ball valve and gas outlet the below of institute's link, is provided with control system main frame and motor cavity pressure transmitter;
The sidewall of the Systematical control casing at place, gas outlet is provided with two and controls cable exits.
Preferably, the corner of the external side of system control box is respectively arranged with the mounting ear of diameter 10cm.
Preferably, the length of whole system box sizes is respectively 675mm, 535mm, 165mm.
Preferably, in control system main frame control chip adopt be Atmega16L-8PC.
The present invention has the following advantages and good effect:
This patent tool has the following advantages:
1) multichannel measures display simultaneously: native system main frame can measure display two-way pressure parameter simultaneously, a road flow parameter, purge time parameter and total flow display.
2) observing and controlling is reliable and stable: circuit board all adopts high-precision electronic devices and components; technical grade singlechip chip, high-speed a/d converter, perfect anti-interference device coordinates multi-level protection circuit; and add self-stabilization function at zero point in a program, ensure that high stability and the reliability of Survey control.
3) break auto-alarm function show corresponding failure code: when loose contact appears in loop, without input signal, input signal excessive or too small time, main frame can show corresponding failure code, site operation personnel or technician can investigate fault fast according to failure code, increase work efficiency.
4) parameter cryptoguard, power-off is drop-out not: the setting program revising parameter if enter without password, then cannot be revised, avoid the operation of on-the-spot uncorrelated personnel, ensure that the safety of system.All parameters are all kept in the storer that information not easily loses, and preserve after power-off.
5) large-screen lc display: driving voltage is low, power consumption is small, reliability is high, display contains much information, colored display, flicker free, to human body without harm.
6) compact, to install and use and easy to maintenance: whole system box sizes is length × wide × height=675mm × 535mm × 165mm, and weight is no more than 30kg, the corner of casing has 4 mounting holes, convenient for installation and maintenance.
7) cost performance is high: all functions with import like product, but price cheaply nearly 2/3.
Accompanying drawing explanation
Fig. 1 is system construction drawing of the present invention;
Fig. 2 is system works block diagram of the present invention;
Fig. 3 is the circuit diagram of control system main frame in system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described further.
The system construction drawing of this motor pre-boot ventilation control system as shown in Figure 1.This system is made up of air mass flow transmitter 1, motor cavity pressure transmitter 2, pipeline pressure transmitter 3, control system main frame 4, air pipe line solenoid valve 5, air vacuum filter 6, Systematical control casing 7, both air flow modulation ball valve 8 and gas outlet 9.Both air flow modulation ball valve and gas outlet are installed on the relative sidewall of two of Systematical control casing respectively, are connected with air vacuum filter, air pipe line solenoid valve, pipeline pressure transmitter and air mass flow transmitter between both air flow modulation ball valve and gas outlet in turn.The direction of the flow direction indicated by red arrow of air between both air flow modulation ball valve and gas outlet.
In Systematical control casing, between both air flow modulation ball valve and gas outlet the below of institute's link, is provided with control system main frame and motor cavity pressure transmitter.
The sidewall of the Systematical control casing at place, gas outlet is provided with two and controls cable exits.The corner of the external side of system control box is respectively arranged with the mounting ear of diameter 10cm, and the length of whole system box sizes is respectively 675mm, 535mm, 165mm.
The system works block diagram of this motor pre-boot ventilation control system as shown in Figure 2.This system as master chip by AVR series high-performance single-chip microcomputer, is coordinated high-precision pressure and flow sensor, automatically can run according to preset program.After system control parameters setting, the controling parameters information arranged preserved by the single-chip microcomputer as master chip.
According to single-chip microcomputer plug-in, after operating personnel press system power-on switch, inlet open, control system is started working, air mass flow transmitter, motor cavity pressure transmitter and pipeline pressure transmitter measure respectively and show force value, and the force value recorded is sent to control system main frame.According to the controling parameters preset, control system main frame judges whether force value meets setting requirement, when meeting setting and requiring, control system main frame starts timing and shows flow integration, provides electric motor starting signal after reaching control overflow, and delay time is air intake valve closedown after 5 seconds.If operating personnel are without other operation inputs, time delay is system cut-off after 1 minute, quits work.If system open and time delay after 15 seconds pressure parameter still do not meet setting requirement, display failure code, and close gas admittance valve, time delay 15 turns back to holding state after second.If cavity pressure is excessive, then system Self-shut electromagnetic valve, in order to avoid damage motor.
Before electric motor starting, a large amount of pure airs is forced to flow through motor cavity by said method, the explosive gas mixture that may exist in motor is taken out of or its concentration is reduced to below explosion limits, reach after purging requirement and provide electric motor starting signal again, the effective generation stoping blast.
The circuit diagram of the control system main frame in this motor pre-boot ventilation control system as shown in Figure 3.That wherein Master control chip adopts is the Atmega16L-8PC that Atmel company produces.
The present invention, except can be used on INCREASEDSAFETY fire proof motor, also can be used on the fire proof motor of other types, and as on flame-proof type, positive pressure type, Non-spark fire proof motor, concrete using method is the same.
Protection scope of the present invention is not limited to the above embodiments, and obviously, those skilled in the art can carry out various change and distortion to the present invention and not depart from the scope of the present invention and spirit.If these are changed and distortion belongs in the scope of the claims in the present invention and equivalent technologies thereof, then the intent of the present invention also comprises these changes and distortion.
Claims (1)
1. a motor pre-boot ventilation control system, this system is by air mass flow transmitter, motor cavity pressure transmitter, pipeline pressure transmitter, control system main frame, air pipe line solenoid valve, air vacuum filter, Systematical control casing, both air flow modulation ball valve and gas outlet composition, it is characterized in that: both air flow modulation ball valve and gas outlet are installed on the relative sidewall of two of Systematical control casing respectively, air vacuum filter is connected with in turn between both air flow modulation ball valve and gas outlet, air pipe line solenoid valve, pipeline pressure transmitter and air mass flow transmitter, in Systematical control casing, between both air flow modulation ball valve and gas outlet the below of institute's link, is provided with control system main frame and motor cavity pressure transmitter, the sidewall of the Systematical control casing at place, gas outlet is provided with two and controls cable exits, the corner of the external side of system control box is respectively arranged with the mounting ear of diameter 10cm, the length that whole system controls box sizes is respectively 675mm, 535mm, 165mm, that in control system main frame, control chip adopts is Atmega16L-8PC, according to single-chip microcomputer plug-in, after operating personnel press system power-on switch, inlet open, control system is started working, air mass flow transmitter, motor cavity pressure transmitter and pipeline pressure transmitter measure respectively and show force value, and the force value recorded is sent to control system main frame, according to the controling parameters preset, control system main frame judges whether force value meets setting requirement, when meeting setting and requiring, control system main frame starts timing and shows flow integration, provides electric motor starting signal after reaching control overflow, and delay time is air intake valve closedown after 5 seconds, if operating personnel are without other operation inputs, time delay is system cut-off after 1 minute, quits work, if system open and time delay after 15 seconds pressure parameter still do not meet setting requirement, display failure code, and close gas admittance valve, time delay 15 turns back to holding state after second, if cavity pressure is excessive, then system Self-shut electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210272997.7A CN102819234B (en) | 2012-08-02 | 2012-08-02 | A kind of motor pre-boot ventilation control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210272997.7A CN102819234B (en) | 2012-08-02 | 2012-08-02 | A kind of motor pre-boot ventilation control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102819234A CN102819234A (en) | 2012-12-12 |
| CN102819234B true CN102819234B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210272997.7A Active CN102819234B (en) | 2012-08-02 | 2012-08-02 | A kind of motor pre-boot ventilation control system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111930070B (en) * | 2020-10-09 | 2021-01-01 | 亿昇(天津)科技有限公司 | Control method of positive pressure explosion-proof system |
| CN116292376B (en) * | 2023-05-19 | 2023-08-08 | 天津飞旋科技股份有限公司 | Non-electric and electric composite explosion-proof protection method and non-electric and electric composite blower |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201107077Y (en) * | 2007-06-04 | 2008-08-27 | 北京远东四维系统工程技术有限公司 | Control system of automatic purging |
| FR2917902A1 (en) * | 2007-06-19 | 2008-12-26 | Peugeot Citroen Automobiles Sa | Fuel cell assembly securing method for motor vehicle, involves regulating evacuation flow of tampon reserve to guaranty hydrogen concentration lesser than lower explosivity limit, and driving part of flow |
| CN102094859A (en) * | 2010-12-20 | 2011-06-15 | 无锡气动技术研究所有限公司 | Anti-explosion and ventilation control system of pneumatic control motor |
| CN202710983U (en) * | 2012-08-02 | 2013-01-30 | 宜昌兆峰自动化仪表有限责任公司 | Motor prestart ventilation control system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE530546C2 (en) * | 2005-12-28 | 2008-07-01 | Abb As | Explosion protection system for manipulators or industrial robots and relief valve for an explosion protection system |
-
2012
- 2012-08-02 CN CN201210272997.7A patent/CN102819234B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201107077Y (en) * | 2007-06-04 | 2008-08-27 | 北京远东四维系统工程技术有限公司 | Control system of automatic purging |
| FR2917902A1 (en) * | 2007-06-19 | 2008-12-26 | Peugeot Citroen Automobiles Sa | Fuel cell assembly securing method for motor vehicle, involves regulating evacuation flow of tampon reserve to guaranty hydrogen concentration lesser than lower explosivity limit, and driving part of flow |
| CN102094859A (en) * | 2010-12-20 | 2011-06-15 | 无锡气动技术研究所有限公司 | Anti-explosion and ventilation control system of pneumatic control motor |
| CN202710983U (en) * | 2012-08-02 | 2013-01-30 | 宜昌兆峰自动化仪表有限责任公司 | Motor prestart ventilation control system |
Non-Patent Citations (2)
| Title |
|---|
| "气控式电气设备防爆通风控制系统的设计";方清华等;《液压与气动》;20120228(第2期);31-34 * |
| 预先启动通风换气系统及其在增安型电机中的应用;许春家;《电气防爆》;20080228;正文第24页 * |
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| CN102819234A (en) | 2012-12-12 |
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Denomination of invention: A motor pre start ventilation control system Effective date of registration: 20211027 Granted publication date: 20160406 Pledgee: Yichang financing guarantee Group Co.,Ltd. Pledgor: YICHANG ZHAOFENG AUTOMATION INSTR Co.,Ltd. CHINA Registration number: Y2021980011299 |
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Date of cancellation: 20231211 Granted publication date: 20160406 Pledgee: Yichang financing guarantee Group Co.,Ltd. Pledgor: YICHANG ZHAOFENG AUTOMATION INSTR Co.,Ltd. CHINA Registration number: Y2021980011299 |